MAX562 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – Complete 230kbps, 2.7V to 5.25V Serial Interface for Notebook Computers

19-0144; Rev. 0; 9/93
Complete 230kbps, 2.7V to 5.25V
Serial Interface for Notebook Computers
_______________General Description
The MAX562 is designed specifically for notebook and
palmtop computers that need to transfer data quickly.
It runs at data rates up to 230kbps, and has a guaran-
teed 4V/µs slew rate. This device meets the new
EIA/TIA-562 standard that guarantees compatibility with
RS-232 interfaces.
The MAX562 has low-power shutdown and keep-awake
modes. In keep-awake mode, the transmitters are dis-
abled but all receivers are active, allowing unidirection-
al communication. In shutdown mode, the entire chip is
disabled and all outputs are in a high-impedance state.
The MAX562 is available in a standard 28-pin SO pack-
age, and in a smaller footprint shrink small-outline
package (SSOP).
________________________Applications
Palmtop, Notebook, and Subnotebook
Computers
Peripherals
Battery-Powered Equipment
__________Typical Operating Circuit
0.33µF
0.33µF
+2.7V TO
2 C1A 5 3 C1B 4 ^MAX562
+5.25V
1
C1A+ C1A- C1B+ C1B-
V_CC
VOLTAGE
V+
28
INPUT
0.33µF
25
DOUBLER/TRIPLER
0.33µF
C2+
C2
24 _C2-
VOLTAGE
INVERTER
V- ²⁶
C3 0.68µF
C4 0.33µF
11
T1IN
T1
18
T1OUT
CMOS
INPUTS
T2IN ¹²
T2
T3IN ¹³
T3
17
T2OUT
EIA/TIA
-562
OUTPUTS
16 _T3OUT
R1OUT ⁶
R2OUT ⁷
CMOS ^R3OUT ⁸
OUTPUTS
R4OUT ⁹
R5OUT ¹⁰
14
EN
R1
R2
R3
R4
R5
GND
27
23 _R1IN
5k
22 _R2IN
5k
21 _R3IN
5k
20 _R4IN
5k
EIA/TIA
-562
INPUTS
19 _R5IN
5k 15 _SHDN
____________________________Features
o 230kbps Data Rate, LapLink™ Compatible
o Operates from a 2.7V to 5.25V Supply
o Designed for EIA/TIA-562 and EIA/TIA-232 Applications
o Guaranteed 4.0V/µs Slew Rate
o 3 Drivers, 5 Receivers
o Flow Through Pinout
o Low-Power Shutdown and Keep-Awake Modes
o Low-Cost, Surface-Mount External Capacitors
______________Ordering Information
PART
MAX562CWI
MAX562CAI
MAX562C/D
MAX562EWI
MAX562EAI
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
* Contact factory for dice specifications.
PIN-PACKAGE
28 SO
28 SSOP
Dice*
28 SO
28 SSOP
__________________Pin Configuration
TOP VIEW
VCC 1
C1A+ 2
C1B+ 3
C1B- 4
C1A- 5
R1OUT ₆
R2OUT 7
R3OUT 8
R4_OUT 9
R5OUT 10
T1IN ₁₁
T2IN 12
T3IN 13
EN 14
MAX562
28 V+
27 GND
26 V-
25 C2+
24 C2-
23 R1IN
22 R2_IN
21 R3_IN
20 R4_IN
19 R5_IN
18 T1_OUT
17 T2OUT
16 T3OUT
15 SHDN
SO/SSOP
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